"active galactic nucleus" meaning in English

{
  "forms": [
    {
      "form": "active galactic nuclei",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "active galactic nuclei"
      },
      "expansion": "active galactic nucleus (plural active galactic nuclei)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Entries with translation boxes",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Finnish translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with German translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Hungarian translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Mandarin translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Turkish translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Astronomy",
          "orig": "en:Astronomy",
          "parents": [
            "Sciences",
            "Space",
            "All topics",
            "Nature",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Black holes",
          "orig": "en:Black holes",
          "parents": [
            "Astronomy",
            "Astrophysics",
            "Gravity",
            "Relativity",
            "Sciences",
            "Space",
            "Physics",
            "Acceleration",
            "Mechanics",
            "All topics",
            "Nature",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "derived": [
        {
          "tags": [
            "abbreviation"
          ],
          "word": "AGN"
        }
      ],
      "glosses": [
        "A compact region at the center of a galaxy that has a much higher than normal luminosity over at least some portion of the (measurable) electromagnetic spectrum."
      ],
      "id": "en-active_galactic_nucleus-en-noun-9Yr2J~6Q",
      "links": [
        [
          "astronomy",
          "astronomy"
        ],
        [
          "galaxy",
          "galaxy"
        ],
        [
          "luminosity",
          "luminosity"
        ],
        [
          "electromagnetic spectrum",
          "electromagnetic spectrum"
        ]
      ],
      "raw_glosses": [
        "(astronomy) A compact region at the center of a galaxy that has a much higher than normal luminosity over at least some portion of the (measurable) electromagnetic spectrum."
      ],
      "related": [
        {
          "word": "active galaxy"
        }
      ],
      "synonyms": [
        {
          "tags": [
            "abbreviation"
          ],
          "word": "AGN"
        }
      ],
      "topics": [
        "astronomy",
        "natural-sciences"
      ],
      "translations": [
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "roman": "huódòng xīngxìhé",
          "sense": "region",
          "word": "活動星系核 /活动星系核"
        },
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "region",
          "word": "aktiivinen galaksiydin"
        },
        {
          "code": "de",
          "lang": "German",
          "sense": "region",
          "tags": [
            "masculine"
          ],
          "word": "aktiver galaktischer Kern"
        },
        {
          "code": "hu",
          "lang": "Hungarian",
          "sense": "region",
          "word": "aktív galaxismag"
        },
        {
          "code": "tr",
          "lang": "Turkish",
          "sense": "region",
          "word": "etkin galaktik çekirdek"
        }
      ],
      "wikipedia": [
        "active galactic nucleus"
      ]
    }
  ],
  "word": "active galactic nucleus"
}

{
  "derived": [
    {
      "tags": [
        "abbreviation"
      ],
      "word": "AGN"
    }
  ],
  "forms": [
    {
      "form": "active galactic nuclei",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "active galactic nuclei"
      },
      "expansion": "active galactic nucleus (plural active galactic nuclei)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "active galaxy"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Entries with translation boxes",
        "Pages with 1 entry",
        "Pages with entries",
        "Terms with Finnish translations",
        "Terms with German translations",
        "Terms with Hungarian translations",
        "Terms with Mandarin translations",
        "Terms with Turkish translations",
        "en:Astronomy",
        "en:Black holes"
      ],
      "glosses": [
        "A compact region at the center of a galaxy that has a much higher than normal luminosity over at least some portion of the (measurable) electromagnetic spectrum."
      ],
      "links": [
        [
          "astronomy",
          "astronomy"
        ],
        [
          "galaxy",
          "galaxy"
        ],
        [
          "luminosity",
          "luminosity"
        ],
        [
          "electromagnetic spectrum",
          "electromagnetic spectrum"
        ]
      ],
      "raw_glosses": [
        "(astronomy) A compact region at the center of a galaxy that has a much higher than normal luminosity over at least some portion of the (measurable) electromagnetic spectrum."
      ],
      "topics": [
        "astronomy",
        "natural-sciences"
      ],
      "wikipedia": [
        "active galactic nucleus"
      ]
    }
  ],
  "synonyms": [
    {
      "tags": [
        "abbreviation"
      ],
      "word": "AGN"
    }
  ],
  "translations": [
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "roman": "huódòng xīngxìhé",
      "sense": "region",
      "word": "活動星系核 /活动星系核"
    },
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "region",
      "word": "aktiivinen galaksiydin"
    },
    {
      "code": "de",
      "lang": "German",
      "sense": "region",
      "tags": [
        "masculine"
      ],
      "word": "aktiver galaktischer Kern"
    },
    {
      "code": "hu",
      "lang": "Hungarian",
      "sense": "region",
      "word": "aktív galaxismag"
    },
    {
      "code": "tr",
      "lang": "Turkish",
      "sense": "region",
      "word": "etkin galaktik çekirdek"
    }
  ],
  "word": "active galactic nucleus"
}